针对太阳能利用率较低、光伏发电成本过高的问题, 从聚光器的角度出发, 采用菲涅耳透镜对太阳光进行聚焦.在分析菲涅耳透镜结构的基础上, 提出了透镜主要性能指标, 设计了一个满足要求的1000mm口径透镜, 对聚光时透镜位置的放置进行了讨论.该设计具有一定的通用性, 可以适用于其他大口径的菲涅耳透镜设计, 对于促进太阳能采集发展具有重要意义.

Because of the low utilization of solar energy and the high cost of photovoltaic power, Fresnel lens were used to focus sunlight from the point of concentrator.On the basis of the analysis of the structure of Fres-nel lens, the evaluation indexes of the lens were put forward and a1000mm diameter Fresnel lens which can meet the demands was designed, the location of the lens when it concentrates light was also discussed.The de-sign has a certain universal, which can be applied to other large diameter Fresnel lens design, it is important to promote the development of solar energy collection.